Yamaha 300hp DEC Outboard F300ECB

The Yamaha 300hp DEC Outboard F300ECB is built on Yamaha’s trusted 4.2-liter V6 offshore platform and designed specifically for boats requiring a 35-inch (XXX-Long) shaft. Known for its outstanding reliability and smooth power delivery, this model is ideal for offshore fishing boats, deep-V hulls, and vessels operating in rough saltwater environments.

With a refreshed cowling design, enhanced reverse thrust, and Digital Electronic Controls, the F300ECB offers confident handling, excellent maneuverability, and long-term durability.

Features and Performance

• 4.2L V6 Four-Stroke Engine – Strong offshore torque with smooth, efficient performance

• Digital Electronic Controls (DEC) – Precise throttle and shift response

• Electronic Fuel Injection (EFI) – Reliable starts and optimized fuel delivery

• 35″ XXX-Long Shaft – Ideal for offshore boats with extra-high transoms

• Saltwater Series II™ HP Propeller Compatibility – Improved top-end performance in lighter boats

• Shift Dampener System (SDS®) – Quieter, smoother gear engagement

• TotalTilt™ System – One-touch full trim up or down for easy trailering

• Thrust Enhancing Reverse Exhaust – Superior control when docking or reversing

• High-Output Alternator (50–70 Amp) – Supports advanced marine electronics

Why You Should Buy It

If your offshore boat requires a 35-inch shaft and dependable V6 power, the Yamaha F300ECB is an excellent choice. Its combination of digital control, smooth performance, and Yamaha’s legendary offshore reliability makes it a smart long-term investment for serious saltwater boating.

FAQ – Yamaha 300hp DEC Outboard F300ECB

Q: What makes the F300ECB different from other F300 models?
The F300ECB features a 35-inch (XXX-Long) shaft, designed for boats with extra-high transoms.

Q: Does this model use digital throttle and shift?
Yes. It comes with Digital Electronic Controls (DEC) as standard.

Q: Is this engine suitable for offshore saltwater use?
Absolutely. It’s built on Yamaha’s proven 4.2L V6 offshore platform.

Q: Can it support multiple onboard electronics?
Yes. The high-output alternator easily powers modern marine electronics.